Edelbrock 1955-1981 Chevrolet C1-C3 Corvette S/B Front CoverEdelbrock part #4240 Small Block Chevrolet Our die cast polished timing covers for Chevrolet come with pan seal, allen head bolts, gaskets, washers, and timing marker. #4240 won't fit 1987 & later; #4241 won't fit 1991 and later big block Gen V & VI engines. Warranty Installation Instructions This Part Fits: Year Make Model Submodel 1977,1980 Buick Century Base 1977 1979 Buick Century Custom 1980 Buick Century Estate 1978 1980 Buick Century Limited